//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="KeyboardButton.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. All rights reserved.
//     
//     Permission is hereby granted, free of charge, to any person 
//     obtaining a copy of this software and associated documentation 
//     files (the “Software”), to deal in the Software without restriction, 
//     including without limitation the rights to use, copy, modify, merge,
//     publish, distribute, sublicense, and/or sell copies of the Software, 
//     and to permit persons to whom the Software is furnished to do so, 
//     subject to the following conditions:
//     
//     The above copyright notice and 
//     this permission notice shall be included in all copies 
//     or substantial portions of the Software.
//     
//     THE SOFTWARE IS PROVIDED “AS IS”, 
//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using StgSharp.Controls;
using StgSharp.Geometries;
using StgSharp.Graphics;
using StgSharp.Math;

using System;
using System.Collections.Generic;
using System.Text;

namespace StgSharp.Controls
{
    public class KeyboardButton : ControllingItem
    {
        private PlainGeometryMesh current;
        private AnimationBuilder switchAnimationBuilder;

        private Action? enableAction;
        private Action? disableAction;
        private Action? confirmAction;

        public bool IsHighLighted { get; internal set; }
        public bool IsDisabled { get; internal set; }

        public event Action EnableEvent
        {
            add { enableAction += value; } 
            remove { enableAction -= value; }
        }

        public event Action DisableEvent
        {
            add { disableAction += value; }
            remove { disableAction -= value; }
        }

        public event Action ConfirmEvent
        {
            add { confirmAction += value; }
            remove { confirmAction -= value; }
        }

        public void Enable(AnimationBuilder animation)
        {
            if (!IsDisabled)
            {
                return;
            }
            if (switchAnimationBuilder.IsComplete || switchAnimationBuilder == null)
            {
                switchAnimationBuilder = animation;
            }
            if( enableAction != null)enableAction();
        }

        public void Disable(AnimationBuilder animation)
        {
            if (switchAnimationBuilder.IsComplete || switchAnimationBuilder == null)
            {
                switchAnimationBuilder = animation;
            }
            if (disableAction != null) disableAction();
        }

        public void Highlight(AnimationBuilder animation)
        {
            if (switchAnimationBuilder.IsComplete || switchAnimationBuilder == null)
            {
                switchAnimationBuilder = animation;
            }
            if (confirmAction != null) confirmAction();
        }

        public override IEnumerator<PlainGeometryMesh> GetEnumerator()
        {
            current.Texture = switchAnimationBuilder.GetAnimationFrame();
            yield return current;
        }

    }//----------------------------------- End of class --------------------------------------------
}